<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
<title>Make Your 1st  Diagram</title>
<style type="text/css"> <!-- @import url(1_.css);   --> </style>
<link disabled rel="stylesheet" type="text/css" href="1_.css">
</head>

<body bgcolor="#ffffff" text="#000000" link="#008000" vlink="#008000" alink="#008000">
<table cellspacing="0" cellpadding="0" border="0">
  <tr>
    <td align="center" valign="middle" width="50">
    <a href="0_Index.htm"><img src="images/thco35_s.gif" border="0" width="32" height="32" alt="Chem.Eq.Diagr"></a>&nbsp;</td>
    <td align="left" valign="middle"><font size="-1"><a href="0_Index.htm">Chemical Equilibrium Diagrams</a>&nbsp;/ <a href="Tut_0_Tutorials.htm">Tutorials</a></font></td>
  </tr>
</table>

<h3>Make your 1st Diagram with DATABASE &amp; SPANA</h3>

<p>Follow these simple steps:</p>

<p><b>1)</b> Start <a href="DB_0_Main.htm">DATABASE</a> and click on &#147;Fe&#148;
in the periodic table. Click on &#147;Fe&nbsp;2+&#148; in the list of available
components. Both &#147;H+&#148; and &#147;Fe&nbsp;2+&#148; will be
listed as selected components. Click on the pull-down menu
<nobr>&#147;File&nbsp;/</nobr> Search and <nobr>Exit&#148;.</nobr>
Click on the diagram button to save the data file and to make a diagram.
Enter a file name, for example <nobr>&#147;IRON2&#148;.</nobr></p>

<p><b>2)</b> The <a href="S_0_Main.htm">SPANA</a> main window will
appear. Click on the pull-down menu <nobr>&#147;Run&nbsp;/</nobr>
Make a <nobr>Diagram&#148;.</nobr> A new window appears to select
what type of diagram is wanted. Click on the Diagram button in the
upper-left corner of the window.
<center>
<img src="images/Make_diagr.gif" alt="Diagr_Button" title="Diagr_Button" height="67" width="64" border="0">
<br clear="all"></center>
</p>
<p>The calculations will be done by background program.
When the calculations are finished the diagram is displayed in a window:</p>

<p>
<center>
<img src="images/1st_Diagram.gif" alt="1st_Diagram" height="215" width="306" border="0">
</center>
</p>

<p>This logarithmic diagram shows the distribution of hydrolysis products of
<nobr>Fe(II)</nobr> as a function of pH.
<nobr>Fe(OH)<sub>2</sub>(c)</nobr> precipitates at pH&gt;9.1</p>

<p>See additional <a href="Tut_0_Tutorials.htm">tutorials</a>.</p>

</body>
</html>